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Finding the Fourth Proportional to 26,957.80, 40,436.70 and 7,239.40

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Solution

The fourth proportional to 26,957.80, 40,436.70 and 7,239.40 is: 10,859.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,957.80 : 40,436.70 = 7,239.40 : x
  2. Step 2: Convert to fraction form
    26,957.80/40,436.70 = 7,239.40/x
  3. Step 3: Cross multiply
    26,957.80x = 40,436.70 × 7,239.40
  4. Step 4: Simplify right side
    26,957.80x = 292,737,445.98
  5. Step 5: Solve for x
    x = 292,737,445.98/26,957.80
  6. Step 6: Final answer
    x = 10,859.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.